Adjustable grader.



J R. NUNAMAKER.

ADJUSTABLE GRADER.

APPLICATION FILED 131:0. 24, 1913.

Patented Sept. 8, 1914.

2 SHEETS-SHEET 1.

WEIUIM Fly. 1.

WI TNESSES I [NVE/I/TOR M. JR. Nunama/ren w BY 9 L: ATTORNEY THE NORRIS PETERS CO. PHGTO-LITHQ, wASHlNGrON, Dr C.

J. R. NUNAMAKER.

ADJUSTABLE GRADER.

APPLIOATION FILED DEC. 24, 1913.

1,109,866, Patented Sept. 8, 1914.

2 SHEETS-SHEET 2.

INVENTOR i JR/Vunama/rer.

ORNEY THE NORRIS PETERS 60.. PHOTO-LITHOvv WASHINGTON, D. c.

:IiIQodRiverfStFt A a new and use ul l novelnejnt in Adj usti meo obj eats g of approximately tound shape, into inventionlis t comprising plurality of parallel bars justed des ed .toueffect any articular;

t ugh thevbjj sf, l verytotheIboXestolbepacked. a detaile of myinvention are herein-i afteri fullyi set foi'tltfl In the aoconipanyin isa flout elevation ofmy machine; the (16% ivery chute jbeing shown in broken lines: 1 yfoiijthe purposehof showing certain other parts vvith greater clearness; Fig. 2 is a vertical longitudinal prose-section taken on i theline22 of Fig. 91;Fig. 3 is apartial [plan View of the far side of the machine; wandiFig. {his adetailflof construction. f The body of myinachine is of rectangular box-shape having fixedsidesfa, afa fixed ba okcend, band: a movable frontk end a. The bottom ofthis box consists of a plupralityfwof movable irack barsd. The body is mounted onylegs, 'efivhich are preferably a i 'idly braced bythebars fyf'. 1A chute g, madeiof some soft, flexiblematerial, is sup }ported loeneath the box bottoni of the body iysoQas to catch the gfaded material falling "through;between the tack bars and conduct) it ltoy suitable :packingyboxeg the lattenmot being:shownin thedrawings, 11 11 1 i 1 he sides, a, a, are niade With longitudinal a te/mt the loase,anjdqthebottom jofwsuch" islets! e coveredby striped", ofvisoinegood eatingmaterial )asb ilion. barsj of iij B bly tiedt n the ts:h, e i dstof these bars beingatwistedj; t y a vertical ,planeias at loildjFigS. Land 3.1 f'lheybars,d, arewinade half; fi'ound in crossyysection,land

JAMES R K Ib 30.01) f me OREGON musm anufelianiingw y bar oh the following j is; a 1

Finafohines fox ha v flee s ea ing i pi sit anth a lie; qtata y journal d1 h r legs, a and an interniediatebearing s.

2 Level s, t, areqrigid on theends of i i theshaft 1" aware provided with sfliing' i To: this endmy gradericonsists 10 a Tack spacedapart; andinieans Wherebythe spaces betweensaid bai's be var ed and ad The 5 nggraltled? materia falling it it 1 i l' y tqflioteye bolt u: with thew draw ngs: Figure 1 i movement of therackbars j mayfbe facili adapted for niovingJhe latter siniulta neouslyftoward and from each otl1er,and whereby said bars are fp ositioned equidis body having sides and ends,a; plurality of gradingbarsmovably supportedbetyveen the y {connections thereffomfjto said barsadapted for moving the latter simultaneously toward j andgfrom each other and whereby said bars a a dla ff h f t e 0 th foremostgrack bar,

T insu rje ja ainjst the fi'uit, o1iotlierf fai'ticle 1njg ci'us edi the ra e bars, the fsidesy a, Ia and the ends ofthe 5: body are padded; l e 51M, alia ,l vsrespee vely- Boltedby; bolts Z 11 thet upportsypypfi to sides 3 of; the x-body are 1 parallel notjohedarc barswg, A]; strutp? acts asa *brace ,ffor the supp ts '32), A 1 shaft 4", in alinernent wifllthemente s of thearc bars, 95k

6 See Figs. 1

vpawls, u, adapted to be engagedwvith thefiifl, notches of the are {bars 9, so asto lock the y levers in position as adjusted, on" the t; flevers,t, are a plurality of collars 'v, spaced equidistantapart anddfsecuredYin placeby; I feet-screws. Theweollars are made with eyes 2/,"and the; ends; I of the flat barsi [j (see Fig. 4) are peiforatedand hold an eye-bolt w locked inflplace bythenuts (12,!

oollars 1) in such manner that by opeiating i jthe levers 2f thebitlfsj may becorrespondfingly brought closerjjtogetherf or} moved farther apart, according to the degree off movement of said levers, forthe purpose of varyingthe grading spaces between said by bars 7'. By having-the arc bars graduated to a predetermined scale, the proper tated relatively to the gradingto be done.

1. An adjustable grader comprising? a body having sides and ends, a plurality of y gradingbars nmvablyjsupported between I xthesides, one ofithe ends of the bed being ,X

carried byjone of said bars, a level a and connections therefrom to said} bars i tantly from each other. 1

i 12. An adjustable grader sides, one of the endsofgthebodyibeing carried by one of said bars, a leverele nent and are positioned equidistantly from each other,

*means for gaging the movement of theflever element relatively to the desired spacing of the bars, andmeans for locking the lever ele-,

ment in place as adjusted] 3. An adjustable grader comprising a body having sides and ends, a plurality of grading bars movably supported between the sides, one of the ends of the body being carried by one of said bars, levers fulcrumed at the sides of the body, rods connecting saidlevers with the bars respectively, means justed.

4. An adjustable grader comprising a body having sides and ends, a plurality of grading bars movablysupported between the sides, one of the ends of the body being car- Copies of this patent may be obtained for ried by one of said bars, levers fulcrumed at r the sides of the body, collars adjustably mounted on said levers, rods connecting said collars with the bars respectively, means for gaging the movement of the levers relatively to the desired spacing of the bars, and means for lockingthe levers in place as adjusted.

5. An adjustable grader comprising a body having sides and ends, the sides being provided with horizontal slots at the bottom, a plurality of grading bars bearin at their ends in said slots of the sides, one 0% the ends of the body being carried by one of said bars, levers fulcrume'd at the sides of the body, collars adjustably mounted on said levers, rods connecting saideollars with the ends of 1 said bars respectively, notched are bars, and

spring-controlled paWls on the levers engag- '=ing therewith. 7

JAMES R. NUNAMAKER.

WVitnesses: 4

C. L. MORSE, J OHN BAKER.

five cents geach,by'addressing the Commissioner of Patents, 'Washington; D. G. 

